1.A dog is walking on a road.It is a big dog.It is carrying a piece of meat in its mouth.
2.The dog is walking across a bridge now.There is water under the bridge.The water is very deep.
3.The dog can see a dog in the water.This dog has a piece of meat in its mouth,too.
The big dog is barking at the dog in the water.The big dog’s meat is falling into the water.